exports.showIndex = function(req,res){
    res.writeHead(200,{"Content-Type":"text/html;charset=UTF8"});
    res.end("我是首页啊");
}

exports.showStudent = function(req,res){
    var id = req.url.substr(9,6);
    res.writeHead(200,{"Content-Type":"text/html;charset=UTF8"});
    res.end("我是学生页面" + id);    
}

exports.show404 = function(req,res){
    res.writeHead(404,{"Content-Type":"text/html;charset=UTF8"});
    res.end("404");    
}